osfmk/arm/data.s

   1 /*
   2  * Copyright (c) 2007-2009 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #include <arm/asm.h>
  29 #include <arm/proc_reg.h>
  30 #include "assym.s"
  31
  32 #if defined(__arm__)
  33 #include "globals_asm.h"
  34 #elif defined(__arm64__)
  35 /* We're fine, use adrp, add */
  36 #else
  37 #error Unknown architecture.
  38 #endif
  39
  40
  41         .section __DATA, __data                                         // Aligned data
  42
  43 #if __arm64__
  44         /*
  45          * Exception stack; this is above the interrupt stack so we don't squash the interrupt
  46          * stack on an exception.
  47          */
  48         .global EXT(excepstack)
  49 LEXT(excepstack)
  50         .space  (4096)
  51         .globl  EXT(excepstack_top)
  52 LEXT(excepstack_top)
  53 #endif
  54
  55         /* IRQ stack */
  56         .globl  EXT(intstack)                                           // Boot processor IRQ stack
  57 LEXT(intstack)
  58         .space  (4*4096)
  59         .globl  EXT(intstack_top)
  60 LEXT(intstack_top)
  61
  62
  63         .align 12                                                       // Page aligned Section
  64
  65         .globl  EXT(fiqstack)                                           // Boot processor FIQ stack
  66 LEXT(fiqstack)
  67         .space  (4096)                                                  // One page size
  68         .globl  EXT(fiqstack_top)                                       // Boot processor FIQ stack top
  69 LEXT(fiqstack_top)
  70
  71         .globl  EXT(CpuDataEntries)
  72         .align  12                                                      // Page aligned
  73 LEXT(CpuDataEntries)                                                    // Cpu Data Entry Array
  74         .space  (cdeSize_NUM*MAX_CPUS_NUM),0                            // (filled with 0s)
  75
  76         .globl  EXT(BootCpuData)
  77         .align  12                                                      // Page aligned
  78 LEXT(BootCpuData)                                                       // Per cpu data area
  79         .space  cdSize_NUM,0                                            // (filled with 0s)
  80
  81         .align  3                                                       // unsigned long long aligned Section
  82         .globl  EXT(RTClockData)
  83 LEXT(RTClockData)                                                       // Real Time clock area
  84         .space  RTCLOCKDataSize_NUM,0                                   // (filled with 0s)
  85
  86 #if TRASH_VFP_ON_SAVE
  87         .align  4
  88         .globl  EXT(vfptrash_data)
  89 LEXT(vfptrash_data)
  90         .fill   64, 4, 0xca55e77e
  91 #endif
  92
  93 // Must align to 16K here, due to <rdar://problem/33268668>
  94         .global EXT(kd_early_buffer)
  95         .align 14
  96 LEXT(kd_early_buffer) // space for kdebug's early event buffer
  97         .space 16*1024,0
  98
  99 #if __arm64__
 100         .section __DATA, __const
 101
 102 #if defined(KERNEL_INTEGRITY_KTRR)
 103 /* reserve space for read only page tables */
 104         .align 14
 105 LEXT(ropagetable_begin)
 106         .space 16*16*1024,0
 107 #else
 108 LEXT(ropagetable_begin)
 109 #endif /* defined(KERNEL_INTEGRITY_KTRR)*/
 110
 111 LEXT(ropagetable_end)
 112
 113         .globl EXT(ropagetable_begin)
 114         .globl EXT(ropagetable_end)
 115 #endif /* __arm64__ */
 116
 117 /* vim: set ts=4: */